GETTY(1M) Maintenance Commands GETTY(1M)


NAME


getty - set terminal type, modes, speed, and line discipline

SYNOPSIS


/usr/lib/saf/ttymon [-h] [-t timeout] line
[speed [type [linedisc]]]


/usr/lib/saf/ttymon -c file


DESCRIPTION


getty sets terminal type, modes, speed, and line discipline. getty is a
symbolic link to /usr/lib/saf/ttymon. It is included for compatibility
with previous releases for the few applications that still call getty
directly.


getty can only be executed by the super-user, (a process with the user ID
root). Initially getty prints the login prompt, waits for the user's
login name, and then invokes the login command. getty attempts to adapt
the system to the terminal speed by using the options and arguments
specified on the command line.


Without optional arguments, getty specifies the following: The speed of
the interface is set to 300 baud, either parity is allowed, NEWLINE
characters are converted to carriage return-line feed, and tab expansion
is performed on the standard output. getty types the login prompt before
reading the user's name a character at a time. If a null character (or
framing error) is received, it is assumed to be the result of the user
pressing the BREAK key. This will cause getty to attempt the next speed
in the series. The series that getty tries is determined by what it finds
in /etc/ttydefs .

OPTIONS


The following options are supported:

-h
If the -h flag is not set, a hangup will be forced by
setting the speed to zero before setting the speed to the
default or a specified speed.


-t timeout
Specifies that getty should exit if the open on the line
succeeds and no one types anything in timeout seconds.


-c file
The -c option is no longer supported. Instead use
/usr/sbin/sttydefs -l to list the contents of the
/etc/ttydefs file and perform a validity check on the file.


OPERANDS


The following operands are supported:

line
The name of a TTY line in /dev to which getty is
to attach itself. getty uses this string as the name
of a file in the /dev directory to open for reading
and writing.


speed
The speed argument is a label to a speed and TTY
definition in the file /etc/ttydefs. This definition
tells getty at what speed to run initially, what
the initial TTY settings are, and what speed to try
next, (should the user press the BREAK key to
indicate that the speed is inappropriate). The
default speed is 300 baud.


type and linedisc
These options are obsolete and will be ignored.


FILES


/etc/ttydefs


SEE ALSO


ct(1C), login(1), sttydefs(1M), ttymon(1M), ioctl(2), attributes(5),
tty(7D)


September 14, 1992 GETTY(1M)